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e F. J. LINDENSOHMIDT.

URETHRAL IRRIGATDR AND DILATOR.

Patented Nov. 12, 1889.

UNITED STATES PATENT OFFICE.

FREDERICK J. LINDENSOHMIDT, OF MILWAUKEE, WISCONSIN.

URETHRAL IRRIGATOR AND DILATOR.

SPECIFICATION forming part of Letters Patent No. 414,981, dated November 12, 1889. Application filed July 24:, 1839. Serial No. 318,486. (No model.)

To aZZ whom it may concern.-

Be it known that I, FREDERICK J. LINDEN- SCHMIDT, of Milwaukee, in the county of Milwaukee, and in the State of Wisconsin, have invented certain new and useful Improvements in Urethral Irrigating and Dilating Devices; and I do hereby declare that the following is a full, clear,'and exact description thereof.

My invention relates to urethral irrigating and dilating devices; and it consists in certain peculiarities of construction,'as will be fully set forth hereinafter and subsequently claimed.

In the drawings, Figure 1 is a partly section plan View of my device. Fig. 2 is a plan View thereof. Figs. 3 and 4 are detail crosssections on the lines 3 3 and 4 4, respectively, of Fig.1. Fig. 5 is a detail section of a sleeve. Fig. 6 is a detail section of part of a cannula, showing a curved end; and Fig. 7 is a detail section of a curved sleeve.

A represents a cannula, made, preferably, of brass and nickel-plated, the cannula shown in Figs. 1 and 2 being straight, and having screw-threads formed on each end, as shown at aand b, the latter end receiving a cannulacap B,with corresponding screw-threads, and having a tapered bore, as shown, of ordinary construction.

0 is the dilator, having internal screwthreads 0 d at each end, the former to fit upon the reduced screw-threaded end a of the cannula and the latter to fit upon the reduced screw-threaded end eof the shank E of the irrigator F. The dilator has a series of lon-' gitudinal externalconvex ribs D -D-, forming grooves or channels f f between them. The

- understood from the foregoing description of its construction in connection with the accom panying drawings.

Figs. 1 and 2 illustrate the arrangement employed for dilating and irrigation at the same time. The instrument is inserted the required length in the urethra to reach the seat of the disease, and then the solution to be injected is applied by inserting the tip or cap of an ordinary bulb or fountain syringe within the tapered bore of thecannula-cap B, and owing to the dilation of the urethral .canal the said fluid which escapes through the passages j makes its way out through the channels or grooves f f and over the outside of the instrument. In case dilation is not necessary, the dilator C may be removed and the irrigator and cannula connected by means of a sleeve H. (Shown in Fig.

If the neck of the bladder is to be irrigated, a'curved sleeve I, Fig. 7, is connected to the cannula (a cannula with a curved or elbow end 10- being preferably employed) and the irrigator attached to this sleeve as before; but if only the membranous part of the urethra is to be irrigated the said curved sleeve I may be attached to a straight cannula and the irrigator attached to said curved sleeve as before. In case of stricture it might be necessary to dilate these parts, and if so the dilator may be attached to the curved end k of the cannula.

It will be understood that the views in the drawings are greatly exaggerated for the sake of clearness, the ordinary size of the cannula being three-eighths of an inch in its external diameter and the preferred size of the other parts being in the same proportion, though I usually fit up a case with a series of differentsized dilators and irrigators, all designed to be attached to the same-sized cannulas.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is.;

1. The combination, with a cannula and irrigator, of a channeled dilator of greater .diameter than said cannula interposed between the said parts and having a bore in communication with the bores in said cannula and irrigator, substantially as set forth.

2. The combination, with a cannula, of a dilator secured thereto, having a bore in communication with the cannula-bore and exterior convex ribs forming grooves or channels between them, and an irrigator secured to the end of said dilator, substantially as set forth.

the cannula-cap to some distance within the irrigator, and oblique passages extending backward from the bore within the irrigator to the outside of the rear portion thereof, sub stantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in the county of Milwaukee and State of isconsin, in the presence of two witnesses.

FREDERICK J. LINDENSClIliIID'l. Vitnesses:

H. G. UNDERWOOD, WM. KLUG. 

